diff --git a/README.md b/README.md
index 4f24544..d807301 100644
--- a/README.md
+++ b/README.md
@@ -767,7 +767,7 @@ If you're using [Antigen](https://github.com/zsh-users/antigen), you can test th
 * [work-line](https://github.com/afnizarnur/work-line) - Theme with nice emojis.
 * [xremix](https://github.com/xremix/oh-my-zsh-xremix-theme) - An oh-my-zsh shell theme based on the Jreese theme plugin.
 * [xxf](https://gist.github.com/xfanwu/18fd7c24360c68bab884) - Shows Current commit shorten hash and message.
-* [yairshefi](https://github.com/yaireclipse/yairshefi-ohmyzsh-theme) - Minimal theme with line separated prompts.
+* [yairshefi](https://github.com/yaireclipse/yairshefi-ohmyzsh-theme) - Minimal theme with line separated prompts. Based on [Robby Russell's theme](https://github.com/robbyrussell/oh-my-zsh/blob/master/themes/robbyrussell.zsh-theme)
 * [ykmam](https://github.com/julienvanderkluft/ykmam-zsh-theme/blob/master/ykmam.zsh-theme) - Modified from ys theme. Optimized for a dark background.
 * [ys](https://github.com/cristiancavalli/ys-zsh-custom-theme) - Clean, simple, compatible and meaningful theme meant for dark backgrounds.
 * [yuki](https://github.com/yuki-torii/yuki-zsh-theme) - A dark optimized ZSH theme.